IPv4 prefix

81.7.128.0/18

IP Prefix (CIDR): 81.7.128.0/18
Subnet Mask: 255.255.192.0
Address Count: 16,384
IP Range: 81.7.128.0 - 81.7.191.255
Subnet calculator: Calculate subnet details

Registered Owners

Registration 1 of 2

Owner: Sentia Denmark A/S
Handle: ORG-JA1-RIPE
Country: Denmark (DK)
Address: Industriparken 32 2750 Ballerup DENMARK
Registry: RIPENCC
Registered Prefix: 81.7.128.0/18 (81.7.128.0 - 81.7.191.255)

Registration 2 of 2

Handle: JAYNET
Country: Denmark (DK)
Registry: RIPENCC
Registered Prefixes: 81.7.128.0/24 (81.7.128.0 - 81.7.128.255)
81.7.129.64/28 (81.7.129.64 - 81.7.129.79)
81.7.129.80/28 (81.7.129.80 - 81.7.129.95)
81.7.129.96/29 (81.7.129.96 - 81.7.129.103)
81.7.129.104/30 (81.7.129.104 - 81.7.129.107)
81.7.129.108/30 (81.7.129.108 - 81.7.129.111)
81.7.129.112/28 (81.7.129.112 - 81.7.129.127)
81.7.129.128/26 (81.7.129.128 - 81.7.129.191)
81.7.129.192/29 (81.7.129.192 - 81.7.129.199)
81.7.129.200/29 (81.7.129.200 - 81.7.129.207)
81.7.129.208/28 (81.7.129.208 - 81.7.129.223)
81.7.129.224/27 (81.7.129.224 - 81.7.129.255)
81.7.130.0/25 (81.7.130.0 - 81.7.130.127)
81.7.130.128/26 (81.7.130.128 - 81.7.130.191)
81.7.130.192/29 (81.7.130.192 - 81.7.130.199)
81.7.130.200/29 (81.7.130.200 - 81.7.130.207)
81.7.130.208/29 (81.7.130.208 - 81.7.130.215)
81.7.130.216/29 (81.7.130.216 - 81.7.130.223)
81.7.130.224/27 (81.7.130.224 - 81.7.130.255)
81.7.131.0/24 (81.7.131.0 - 81.7.131.255)
81.7.132.0/29 (81.7.132.0 - 81.7.132.7)
81.7.132.8/29 (81.7.132.8 - 81.7.132.15)
81.7.132.16/28 (81.7.132.16 - 81.7.132.31)
81.7.132.32/27 (81.7.132.32 - 81.7.132.63)
81.7.132.64/28 (81.7.132.64 - 81.7.132.79)
81.7.132.80/28 (81.7.132.80 - 81.7.132.95)
81.7.132.96/28 (81.7.132.96 - 81.7.132.111)
81.7.132.112/30 (81.7.132.112 - 81.7.132.115)
81.7.132.116/30 (81.7.132.116 - 81.7.132.119)
81.7.132.120/29 (81.7.132.120 - 81.7.132.127)
81.7.132.128/26 (81.7.132.128 - 81.7.132.191)
81.7.132.192/26 (81.7.132.192 - 81.7.132.255)
81.7.133.0/25 (81.7.133.0 - 81.7.133.127)
81.7.133.128/26 (81.7.133.128 - 81.7.133.191)
81.7.133.192/28 (81.7.133.192 - 81.7.133.207)
81.7.133.208/28 (81.7.133.208 - 81.7.133.223)
81.7.133.224/27 (81.7.133.224 - 81.7.133.255)
81.7.134.128/25 (81.7.134.128 - 81.7.134.255)
81.7.135.0/26 (81.7.135.0 - 81.7.135.63)
81.7.135.64/27 (81.7.135.64 - 81.7.135.95)
81.7.135.96/28 (81.7.135.96 - 81.7.135.111)
81.7.135.112/28 (81.7.135.112 - 81.7.135.127)
81.7.135.128/26 (81.7.135.128 - 81.7.135.191)
81.7.135.192/28 (81.7.135.192 - 81.7.135.207)
81.7.135.208/28 (81.7.135.208 - 81.7.135.223)
81.7.135.224/30 (81.7.135.224 - 81.7.135.227)
81.7.135.228/30 (81.7.135.228 - 81.7.135.231)
81.7.135.240/28 (81.7.135.240 - 81.7.135.255)
81.7.136.0/29 (81.7.136.0 - 81.7.136.7)
81.7.136.8/29 (81.7.136.8 - 81.7.136.15)
81.7.136.16/28 (81.7.136.16 - 81.7.136.31)
81.7.136.32/28 (81.7.136.32 - 81.7.136.47)
81.7.136.48/28 (81.7.136.48 - 81.7.136.63)
81.7.136.128/28 (81.7.136.128 - 81.7.136.143)
81.7.136.144/28 (81.7.136.144 - 81.7.136.159)
81.7.136.160/27 (81.7.136.160 - 81.7.136.191)
81.7.136.192/28 (81.7.136.192 - 81.7.136.207)
81.7.136.208/29 (81.7.136.208 - 81.7.136.215)
81.7.136.216/29 (81.7.136.216 - 81.7.136.223)
81.7.136.224/27 (81.7.136.224 - 81.7.136.255)
81.7.137.0/30 (81.7.137.0 - 81.7.137.3)
81.7.137.4/30 (81.7.137.4 - 81.7.137.7)
81.7.137.8/30 (81.7.137.8 - 81.7.137.11)
81.7.137.16/28 (81.7.137.16 - 81.7.137.31)
81.7.137.32/28 (81.7.137.32 - 81.7.137.47)
81.7.137.48/30 (81.7.137.48 - 81.7.137.51)
81.7.137.60/30 (81.7.137.60 - 81.7.137.63)
81.7.137.64/27 (81.7.137.64 - 81.7.137.95)
81.7.138.0/29 (81.7.138.0 - 81.7.138.7)
81.7.138.8/29 (81.7.138.8 - 81.7.138.15)
81.7.138.16/29 (81.7.138.16 - 81.7.138.23)
81.7.138.24/29 (81.7.138.24 - 81.7.138.31)
81.7.138.32/27 (81.7.138.32 - 81.7.138.63)
81.7.138.64/28 (81.7.138.64 - 81.7.138.79)
81.7.138.80/29 (81.7.138.80 - 81.7.138.87)
81.7.138.88/29 (81.7.138.88 - 81.7.138.95)
81.7.138.96/30 (81.7.138.96 - 81.7.138.99)
81.7.138.100/30 (81.7.138.100 - 81.7.138.103)
81.7.138.104/29 (81.7.138.104 - 81.7.138.111)
81.7.138.128/25 (81.7.138.128 - 81.7.138.255)
81.7.139.0/24 (81.7.139.0 - 81.7.139.255)
81.7.140.4/30 (81.7.140.4 - 81.7.140.7)
81.7.140.8/29 (81.7.140.8 - 81.7.140.15)
81.7.140.20/30 (81.7.140.20 - 81.7.140.23)
81.7.140.24/29 (81.7.140.24 - 81.7.140.31)
81.7.140.32/27 (81.7.140.32 - 81.7.140.63)
81.7.140.64/27 (81.7.140.64 - 81.7.140.95)
81.7.140.96/29 (81.7.140.96 - 81.7.140.103)
81.7.140.104/29 (81.7.140.104 - 81.7.140.111)
81.7.140.112/30 (81.7.140.112 - 81.7.140.115)
81.7.140.120/29 (81.7.140.120 - 81.7.140.127)
81.7.140.128/27 (81.7.140.128 - 81.7.140.159)
81.7.140.160/27 (81.7.140.160 - 81.7.140.191)
81.7.140.192/26 (81.7.140.192 - 81.7.140.255)
81.7.141.0/29 (81.7.141.0 - 81.7.141.7)
81.7.141.8/30 (81.7.141.8 - 81.7.141.11)
81.7.141.12/30 (81.7.141.12 - 81.7.141.15)
81.7.141.16/29 (81.7.141.16 - 81.7.141.23)
81.7.141.28/30 (81.7.141.28 - 81.7.141.31)
Delegated Prefix: 81.7.128.0/18 (81.7.128.0 - 81.7.191.255)

These results are partial. Additional registration records were omitted.

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
81.7.128.0/21	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.128.0	81.7.135.255
81.7.136.0/22	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.136.0	81.7.139.255
81.7.140.0/23	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.140.0	81.7.141.255
81.7.144.0/23	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.144.0	81.7.145.255
81.7.148.0/22	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.148.0	81.7.151.255
81.7.152.0/22	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.152.0	81.7.155.255
81.7.158.0/23	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.158.0	81.7.159.255
81.7.160.0/21	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.160.0	81.7.167.255
81.7.168.0/22	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.168.0	81.7.171.255
81.7.176.0/20	More specific	AS47292	Sentia Denmark A/S	Denmark (DK)	81.7.176.0	81.7.191.255